There is this article New inner Sydney high-rise school for 1200 students revealed on the SMH today regarding the new high school that is going to be built and open by 2020 on the current Cleveland Street Intensive English High School site. I have to say high rise schools make sense in inner suburbs such as Sydney and Melbourne etc. With the high land cost and people moving back into inner cities, this is more or less the only sensible option. I have attended a number of very compact primary schools in my earlier days. The main problem was not so much the vertical layout of the schools, it is the lack of open and green space that really hurt.
The site of Cleveland Street Intensive English High School is not big, so I cannot imagine they would be fit much else other than the buildings on the site. One option is to use the nearby Prince Alfred Park which is the most likely option. However, this represents lost of valuable public park land as well and will have a big impact on increasing inner Sydney population which also require a lot of open spaces.
I have not seen the actual plan yet, so should be interesting when we finally get to see it.